Byron



(No Model.)

B. J. DOUDS.

PUMP. No. 579,296. Patented Mar. 23, 1897.

linrrnn drains .Partnr Ori-rien.

BYRON J. DOUDS, OF CANTON, OI-IIO.

PUMP.

SPECIFICATION forming part of Letters Patent No. 579,296, dated March23, 1897. Application led September 21, 1894. Serial No. 523,696. (Nomodel.)

To all whom it 771/607./ concern.-

Be itlknown that I, BYRON J. DoUns, a citizen of the United States,residing at Canton, in the county of Stark and State of Ohio, haveinvented certain new and useful Improvements in Pumps; and I do herebydeclare that the following is a full, clear, and exact descrption of thesame, reference being had to the annexed drawings, making a part of thisspecification, and to the letters of reference marked thereon, in which-Figure l is a longitudinal section of the pump, showing the sameproperly attached to a can. Fig. 2 is horizontal'secton of the pistontop or handle, showing a portion of the piston-rod and the rod properlyattached. Fig. 3 is a detached view of the screw-threaded flangedesigned and calculated to beattached to cans. Fig. 4 is a view showinga portion of the can and its opening directly below the screw-threadedflange. Fig. 5 is a transverse section through line x, Fig. 1. Fig. 6 isa detached View of the floating valve and its different parts. Fig. 7 isa view of the screwthreaded iiange, showing the same somewhat enlargedand illustrating a portion of the pump-barrel and its screw-threadednozzle socket or thimble. Fig. 8 is a detached view of the piston-valve,showing a portion of the piston-rod.

The present invention aims to provide pharmaceutical pumps that willovercome the annoyances heretofore experienced in the operation of pumpsof this class, which are the dripping and the escaping of the liquidduring and after the piston descends; and the objects are, first, toWithdraw the liquid from the nozzle when the piston descends second, toprevent the liquid from rising in the barrel when the piston descends;third, to prevent dripping of adherent liquid from the free end of thenozzle after operatin g the pump; fourth, to return the overflow ofliquid to the can, and, iifth, to prevent leakage from a can having apump during transportation.

Similar letters of reference indicate corresponding parts in all of theiigu-res of the drawings.

In the accompanying drawings, A represents the pump-barrel, Which isformed of a length to -correspond substantially with thc length orheight of the can to which it is attached and extends a short distanceabove the top of the can for the purpose hereinafter described. Withinthe pump-barrel A is 1ocated the piston-rod tt, to the lower end ofwhich is attached in any convenient and wellknown manner thepiston-valve B, which may be of any desired style, and to the top orupper end of the piston-rod a is attached the cap or handle E, which capor handle is constructed as hereinafter described.

The top or upper end of the barrelA is provided with the stopple c,which stopple is for the purpose of closing the upper end of the barreland also forms a guide for the piston-rod. At the upper end of thebarrel and below the stopple is located the screwthreaded socket d,which communicates with the interior of the barrel A and is for thepurpose of receiving and holding the nozzle e, which nozzle is providedat its outer end with a pendant a', the main part e being inclineddownward, as illustrated in Fig. l, and is so inclined for the purposeof properly draining the adhering liquid into the barrel, and therebyprevent the liquid from dripping from the outer end of the nozzle afteroperating the pump. Below the piston-valve B and within the barrel A issecured the valve-seat O, which valve-seat is provided with an openingf, which opening is for the purpose of allowing the liquid to pass thevalve-seat in either direction. The valve D is formed so as to allow theliquid to pass above it during the time the piston-valve is raised. Thevalve D is secured to the upper end of the rod g, which rod extendsthrough the valve-seat opening fand has secured at its lower end a stopg', all of the described parts being made of material that will float,preferably wood, so. that at the downward stroke of the piston-valve aconsiderable quantity of the liquid in the barrel will escape before thevalve D comes in contact with its seat, the stop g serving to limit theupward movement of the valve D, so that a sufficient quantity only ofthe column of the liquid in the barrel will escape to empty the nozzlee. It will be understood that a stop could be secured to the barrel Aabove the valve D 'without departing from the nature of my invention, asthe only object of the stop g' is to limit the movement of the valve D,and hence I do not desire to be confined to any particular kind of stop.

The valve D is provided with the small opening h to allow a sufficientquantity of liquid to escape or pass through the valve after it engageswith its seat and during the continued downstroke of the piston-rod andits valve, the object being to allow for the increased room taken up bythe piston-rod as it enters the barrel, but it will be understood thatthe opening h may be differently located and the same objectaccomplished; and it is not absolutely necessary that the opening belocated in the valve D, as the same object can be accomplished byproviding an opening in the valve-seat and so locating the opening thatit would not be covered by the valve D when said valve has becomeseated.

The upper end of the barrel A above the can is formed somewhat larger indiameter than the barrel proper, and is so formed on its top or upperend that a cup will be provided to catch the overflow of liquid, whichoveriiow of liquid is permitted to return to the can through theaperture d. The outer periphery ot' the flange forming the cup isscrew-threaded, and is so formed for the purpose of receiving andholding the screwthreaded cap E, which screw-threaded cap is attached tothe top or upper end of the piston-rod af.

The cap E limits the downstroke of the piston-rod and its valve, andwhen said cap is screwed down onto its flan ge all of the parts are heldin proper position and leakage is prevented from the can whentransported.

The ange F, which forms the cup, is eX- tended downward and is attachedto the can in any desired manner.

For the purpose of providing a means for properly attaching the nozzleto its socket the opening 7o is provided, which opening is located inthe flange F. It will be understood that the nozzle e should be detachedfor vplacing the can in proper condition for shipment. For the purposeof preventing leakage through the openingc when the nozzle is not in usethe strip lo is provided, which strip is so attached that it can beeasily removed. The operations of the pump are as follows: Vhen thepiston-rod, together with its valve, is raised, the liquid will liowfrom the nozzle in the ordinary manner, but at the downstroke the entirecolumn of the liquid in the barrel A will descend until the valve Drests on its seat, thereby removing the liquid from the nozzle e, and asthe piston-rod and its valve B descends to its lowest point a sufficientquantity of liquid escapes through the opening 71, to prevent the liquidfrom rising in the barrel A, and, last, any adhering liquid will havedrained from the inclined nozzle into the barrel.

I-Iaving fully described my invention, what I claim as new, and desireto secure by Letters Patent, is-

1. The vcombination of a pump-barrel A, having located therein apiston-rod, Iprovided with a valve, the valve-seat C provided with an'opening f, the floating valve D secured to the rod g extended throughthe opening f and provided with a stop and the Iopening h formed in thevalve D, substantially as and for the purposespecified.

2. The combination of apump-barrel having located therein a piston-rodprovided with a piston-valve, the nozzle e connected to the barrel andinclined upward toward its outer end, and the outer end thereof providedwith the pendentportion Cd, the angeF, provided with the opening '70,the strip k and the valve D, substan tially as and for the purposespecilied.

In testimony that I claim the above I have hereunto subscribed my namein the presen ce of two witnesses.

BYRON J. DOUDS.

lVitnesses:

F. W. BOND, E. A. C. SMITH.

